Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
After
Before
AfterFast, Reliable Air Duct Cleaning Across Crownsville
Air duct cleaning in Crownsville typically runs $350 – $650 for a full residential system and is scheduled within a few business days, with our dispatch office coordinating crews from our Washington, DC location. We serve Crownsville’s mix of wooded acreage off Generals Highway, colonial farmhouses near the historic district, and newer executive homes closer to Route 178. Call us at (361) 326-5060 for a free written estimate.
We’ve pulled enough leaf debris and pollen-laden dust from Crownsville ductwork to know this market isn’t like Annapolis or Severna Park. The homes here sit on larger lots surrounded by dense forest, and that changes what collects inside the vents. Our Air Duct Cleaning team arrives with rotary brush systems and HEPA-filtered negative-air machines because standard vacuuming doesn’t touch the sticky green pollen film we find in ducts near Bacon Ridge Natural Area.
Why Hollis Air Duct Cleaning Is Crownsville’s Preferred Air Duct Cleaning Company
Crownsville homeowners know the difference between a crew that understands local conditions and one that’s just passing through. We’ve worked on enough systems off Herald Harbor Road and in the neighborhoods near the Anne Arundel County Fairgrounds to recognize the patterns: retrofitted ductwork in 19th-century farmhouses with original plaster chases, flex duct runs in 1990s custom builds that sag in humid crawl spaces, and separate HVAC units in detached garages or finished basements that get forgotten until the mold smell travels upstairs.
Our reputation here is built on showing up inside the quoted window, pricing in writing before touching anything, and leaving the site clean. The Garrison Standard requires it, and Roy Castellanos enforces it on every job. Technicians are background-checked and uniformed; you know who’s arriving before they knock. Phones are answered by a live person 24 hours a day, no voicemail loops. The 365-Day Done Right Promise covers every repair in writing, if the work fails within a year, we return and make it right at no charge, including a free second visit.
Commercial Air Duct Cleaning in Crownsville
Commercial Air Duct Cleaning in Crownsville covers office suites near the intersection of Generals Highway and Crownsville Road, medical practices, and light industrial spaces where accumulated particulate affects employee health and HVAC efficiency. These systems run longer hours than residential units, often with rooftop package units or split systems serving multiple zones, and they require scheduled maintenance rather than reactive cleaning. A typical commercial duct cleaning in Crownsville runs $800 – $2,500 depending on square footage, system complexity, and access.
Office and Medical Suite Cleaning
We clean supply and return ductwork for Crownsville professional offices with minimal disruption to business hours, using portable Nikro negative-air machines that contain debris without spreading it into occupied spaces. HEPA filtration captures particles down to 0.3 microns, which matters for practices near the Anne Arundel Medical Center corridor where indoor air quality standards are higher.
Rooftop and Multi-Zone Systems
Commercial buildings off Route 178 often use rooftop units with long horizontal duct runs that collect moisture and microbial growth. We inspect with video cameras before cleaning, then apply rotary brush agitation followed by negative-air extraction, documenting the before and after for facility managers.
Air Duct Cleaning Services in Crownsville
Air Duct Cleaning Services in Crownsville address the specific challenges of a community where heavy tree pollen, humid summers, and aging or mixed-era ductwork create conditions that standard maintenance can’t resolve. A typical residential full-system cleaning here runs $350 – $650, with supply-only or return-only cleaning at $200 – $400 depending on system size and accessibility. We also offer Dryer Vent Cleaning in Crownsville and Duct Sealing in Crownsville for homeowners who want the complete picture of their air handling system.
Residential Full System Cleaning
Our residential service covers all supply registers, return grilles, trunk lines, and the air handler cabinet. In Crownsville’s 1980s – 2000s custom homes, we often find flex duct that has pulled loose at connections or sagged in attic spaces, collecting debris in low spots. We flag these issues during the video inspection so you see what we see.
Video Inspection and Documentation
Every full system cleaning includes before-and-after video of your duct interiors. In older Crownsville farmhouses with retrofitted ductwork, this matters because homeowners can’t easily access the chase runs added between plaster walls decades ago. The video shows you the condition, the cleaning result, and any structural concerns like disconnected sections or pest intrusion.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Crownsville
We clean and service ductwork connected to all major HVAC brands, and we stock filtration products from Honeywell, Aprilaire, and Abatement Technologies for Crownsville customers who want upgraded protection after their cleaning. The rotary brush systems we deploy are Rotobrush units, and our negative-air machines come from Nikro, the same equipment commercial crews use in hospitals and schools. If your system needs a filter upgrade or you’re dealing with persistent dust after cleaning, we carry the right media on the van so there’s no second trip or waiting on parts. For homes near Bacon Ridge Natural Area where pollen loads are especially heavy, we often recommend Aprilaire media filters with higher MERV ratings, installed after the ductwork is clean so they don’t clog immediately on existing debris.
Common Air Duct Cleaning Problems We See in Crownsville Homes
- Pollen and leaf debris in fresh-air intakes. Homes off Generals Highway and near the Bacon Ridge Natural Area pull in fine green tree pollen that coats duct interiors with a sticky film. Standard vacuuming won’t remove it; rotary brush agitation with HEPA filtration is required to break it loose and contain it.
- Mold growth in humid crawl space and basement duct runs. Crownsville’s summer humidity stays above 70% for weeks at a time, and flex duct in ventilated crawl spaces condenses moisture on its exterior. That moisture wicks into the insulation and eventually the airstream, creating musty odors and microbial growth that circulates through the house.
- Disconnected or sagging flex duct in custom homes from the 1990s – 2000s. The executive homes built during this period often used flex duct for cost savings in long attic runs. Over twenty-plus years, the sagging creates debris collection points and reduces airflow to distant rooms, which homeowners notice as uneven temperatures before they notice the dust.
- Retrofitted ductwork in colonial farmhouses with compromised chases. Original plaster walls weren’t designed for forced air, and the chase runs added decades ago are often unlined, leaking conditioned air into wall cavities and pulling in attic or basement air through gaps. Cleaning reveals these problems when debris patterns don’t match the expected duct layout.
Pricing for Air Duct Cleaning in Crownsville, MD
Here’s what air duct cleaning costs in the Crownsville market, with prices agreed in writing before any work starts:
| Service | Typical Range in Crownsville |
|---|---|
| Full residential system cleaning (supply + return + trunk + air handler) | $350 – $650 |
| Supply duct cleaning only | $200 – $350 |
| Return duct cleaning only | $200 – $350 |
| Dryer vent cleaning (add-on or standalone) | $125 – $225 |
| Video inspection with documentation | $75 – $150 (often included with full cleaning) |
| Commercial system cleaning | $800 – $2,500 |
What moves the price: system size (number of registers and total linear feet), accessibility (crawl space vs. basement vs. attic), contamination level (heavy pollen or mold remediation adds steps), and whether the job requires access to detached structures like garage or barn units. We don’t quote per-vent pricing because it’s a bait-and-switch setup; we price the whole system, flat, before we start. Call (361) 326-5060 for a free written estimate.
We Also Serve Cities Near Crownsville
Our crews work throughout Anne Arundel County, including Air Duct Cleaning in Crownsville and surrounding communities: Severna Park to the east, Annapolis to the southeast, Gambrills to the north, and Crofton to the northeast. Each area has its own housing stock and environmental conditions, and we adjust our approach accordingly. Severna Park’s waterfront homes face salt air corrosion on outdoor units; Crofton’s denser subdivisions have different pollen profiles than Crownsville’s wooded lots. Wherever you are in the county, the pricing standard and the 365-Day Done Right Promise stay the same.
Serving Crownsville, MD - Our Local Coverage Area
We’re based in the Crownsville area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in Crownsville
We typically schedule Crownsville appointments within 2 – 4 business days, with dispatch coordinated from our Washington, DC office and crews routing from the metro area. Call (361) 326-5060 to check current availability, estimates are free and can often be done same-day by phone if you know your system basics.
We cover all of Crownsville, including homes off Generals Highway, the Herald Harbor area, properties near the Anne Arundel County Fairgrounds, and the wooded lots closer to Bacon Ridge Natural Area. Large-lot homes with long driveways, detached structures, and multiple HVAC zones are standard for us, not exceptions.
We don’t treat duct cleaning as an emergency service because it’s a scheduled maintenance job, not a safety hazard. If you’re experiencing sudden airflow loss, burning smells, or electrical issues with your HVAC system, shut the system off and call an HVAC technician first. Once the mechanical problem is resolved, we’re the right call to clean the debris the failure left behind.
Pricing is comparable across Anne Arundel County, but Crownsville’s larger lots and mixed-era housing can add complexity. Homes with multiple systems (main house plus garage or basement unit) cost more than single-system homes, and colonial farmhouses with retrofitted ductwork often need more time for careful access. We price each job individually and put it in writing before starting.
If any repair we perform fails within one year of the service date, Hollis returns and makes it right at no charge to you, including a free second visit. This is backed in writing on every job, not a verbal assurance. The Promise applies to the workmanship and materials we provide; it does not cover new damage or pre-existing conditions we documented and disclosed before starting.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Crownsville and Anne Arundel County since 2004.